Coupling for non-closable circuit-breakers.



K. HO'HN. COUPLING FOR NON-GLOSABLE CIRCUIT BREAKERS.

APPLICATION FILED JAN.24, 1911.

1,04 ,541 Patented Oct. 8, 1912.

fly;

k/l'fnenes. g knew/b1:

g M %K .v

- actuarial.

', To, allwhom it may-concern cult-Breakers or the Like, of which the 01- lowing isa specification.

able bridge contact piece insulated on a trance cfank rod 7, which by at-.Schaifhausen; the Canton of Schadthe; automatic j releasing to switch 0d the current even when the actuswitched-on position BEST AVAILABLE COP insrr rel-rose SWITZERLAND.

con'rnrns sea noN-cLosastn craourrmnnaxnns;

Specification of- Lett ers Patent. Application filed January 24 Patented Got. area-2.

, 1911. Serial in sensor.

,-13e it} known that .I, Khan l-lonn, a citi zen of the Helvetic Confederation, residing haus'enyfiwitzerla-nd, have -invented a new and useful. Coupling for Non-Glosable Gir- This invention has reference to a free turning coupling for automatic non closable circuit breakers or the like, which enables device of the latter ating member is locked in wholly or partly by means of the operating' member. .For this purpose a lever bein pivoted. crosswise, tof the spindle, whic lever can-catch a second spindle and hold it fast by means of a locking member in -.the switchedson position, whereas the lever can be actuated not only by the automatic releasing device but also by the operating member in such a manner that it can release the second spindle and simultaneously the locking device. j

One form of the free-turning coupling as applied to: a high-tension oil-circuit breaker for three-phase current with direct maximum rclease'by the secondary current of the twocurrent transformers-is shown as examplein the accompanying drawing.

, Figure 1 shows a side view of the same partly broken away and partly in section! Fig. 2 shows a plan view, seen from above, of a detail. Fig. 3 diagrammatically shows the corresponding electric connections.

1, in Figs. 1 and 2 ot the high tension oil-circuit breaker is the actuating spindle on the cover 2 ot.- which former the wire clamp 3 (only one 'is shown) for leading in the main current is situated; the correspending clamp tor leading out the main current must be supposedfio be situated behind.

4t is the front fixed contact and the movwhich is fastened 6 movable up and down and can close and o,en the current between the front and back switch contacts. The frame 6 pivotally connected with means of the crank 8 mounted on the sir t 1, can raise and 'lower the t ne 6 and thereby close or interrupt the suit between 4- and i. On closing the circuit, a compression spring 10,

situated on the rod 9 fastened to the cover 1 2 is compressed by connected with the frame 6. A socket 12 1s rigidly mounted on the right end of the shaft 1 and (1312165 3, lever exposed to" the action of a spring 13 and turning on the.

shaft 14. One arm of the. lever, which is pivoted crosswise to the spindle 1 carries a curved piece 15, which, on switching on the current, can" pass beneath the slitted soft iron core 16 of a solenoid 17 (Fig. 3).

. In Fig. 1 the solenoid is inclosed in a slitted casing 18 and the leading in terminals 19-, 20' correspond to the similarly designated terminals in Fig. 3. The iron core is suspended from a spring 21, fastened to the slitted cover of the casing 18 (Fig. 3)

which-spring under normal conditions of current, as shown in Fig; 3, draws it out for the half partfrom the solenoid 17 and can beiregulated. 7

22 is an upwardly directed arm of'the lever'turning on the spindle'l l; This arm carries three rollers 23 ot' whichfithe lower engages in a recess 24 (Figs. 1 and 2-) 01a coupling disk 27' situated at the end of the shaft 25 of the hand wheel 26, this being efiected' under the action of a springilil, and in this manner the shafts 1 and 25 are coupled with each other. The one side 28 of the recess 24: is so directed, that after the roller 23 has entered the recess 24, on turning the hand wheel 26 in the direction of the hands of a clock, it will carry around the said roller and with it the arm 22 and shaft 1; whereas the other side 29 of the recess is sloped so that on'turning the hand wheel 26 in the opposite direction to the hands of a clock, the lowest one of the rollers 23 will be forced out of the recess and thus the coupling between the shaft 1 and shaft25 will be released. switching off of the current between 4; and 5 proceeds under the action oli-tlie spring 10.

In order to lock the actuating member in 1 with the meansof the socket 11 I In this case the automatic into the solenoid 17 (Fig. and will strike against the curved part 15 so that the lowest of the rollers 23 disengages fn'bm the recess 24; the coupling between the shafts 1 and -25 is released, simultaneously the uppermost roller comes out from the latch, 30 and-the switch is automatically switched off under the action of the compressing spring 10.

lFt-he, switch is in open position and the parts 12 and 27 are con led together, the spiral spring 33, fastene on the one hand to the shaft 1 and on the other hand to the disk 27, will not be under tension. If the switch is turned to closed position, the spring 33 is still not under tension, but if an overload occurs while the operator has hold of the handle 26, spring 33 will be wound up,

and if handle 26 is released, it will be turned back to its initial position. In "like manner if an overload occurs'after' handle 26 has been released, it will also be turned back to its initial position. Also here appropriate? stops 31 and 32 prevent the hand wheel 26 from being turned too far.

What I claim-as my invention, and desire to secure by Letters Patent is In a non closable automatic electric circui live cents each, by addressing the breaker or the like the combination with the actuating spindle of an operating spindle, a coupling member fastened to one of the spindles, a s ring fastened on the one hand to the one 0? the spindles and on the other hand to the coupling member, a recess in the latter having the form of a trapezoid,

"a'journaled lever pivoted crosswise to the one of the spin ies, a curved piece on the one arm of the ever, a spring, adapted to force the other arm of the lever into the recess of the coupling member in order to couple the actuating spindle with the operating spindle, an electric device which can actuate the curved piece in order to force the one arm out of the recess when predetermined currents pass the circuit breaker,

a latching mechanism adapted to hold-the one arm of the lever fast when the current is switched on, all substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

.KARL nor-IN.

Witnesses HERMANN KLU'MPP, Go'rrramo SCHWERZMAN.

- Washington, I). 0.

Commissioner of Patents, 

